Well there are several other topics with this but i put new zerex G-05 coolant in this weekend. I ended up getting about a gallon and 1/4 drained out of the system. I found a piece of hose to connect to the drain cock and then just let it drain right into some old antifreeze bottles that i had around.
The long part of this was to let it drain. I let it sit about 2 hours to let it fully drain as much as i could and it was still going very slowly when i stopped it.
Very easy to do this and saves a good amount of money.
Mixing wasnt a big deal just use distilled water and remember how much of each to make a 50 50 mix.
Photos:
Coolant drain and refill
Edited for new photo locations...
-Nick